1 | //roarmixer.c: |
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2 | /* GStreamer |
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3 | * Copyright (C) <2005> Arwed v. Merkatz <v.merkatz@gmx.net> |
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4 | * Copyright (C) <2008> Philipp 'ph3-der-loewe' Schafft |
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5 | * Copyright (C) <2009> Philipp 'ph3-der-loewe' Schafft |
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6 | * <lion@lion.leolix.org> |
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7 | * |
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8 | * roarmixer.h: an RoarAudio audio mixer |
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9 | * |
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10 | * This library is free software; you can redistribute it and/or |
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11 | * modify it under the terms of the GNU Library General Public |
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12 | * License as published by the Free Software Foundation; either |
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13 | * version 2 of the License, or (at your option) any later version. |
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14 | * |
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15 | * This library is distributed in the hope that it will be useful, |
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16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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18 | * Library General Public License for more details. |
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19 | * |
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20 | * You should have received a copy of the GNU Library General Public |
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21 | * License along with this library; if not, write to the |
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22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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23 | * Boston, MA 02111-1307, USA. |
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24 | */ |
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25 | |
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26 | |
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27 | #include "roarmixer.h" |
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28 | |
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29 | GST_DEBUG_CATEGORY_EXTERN (roar_debug); |
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30 | #define GST_CAT_DEFAULT roar_debug |
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31 | |
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32 | enum |
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33 | { |
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34 | PROP_DEVICE_NAME = 1 |
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35 | }; |
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36 | |
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37 | |
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38 | static const GstElementDetails gst_roar_mixer_element_details = |
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39 | GST_ELEMENT_DETAILS ("RoarAudio Mixer", |
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40 | "Generic/Audio", |
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41 | "Control sound input and output levels with RoarAudio", |
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42 | "Philipp 'ph3-der-loewe' Schafft <lion@lion.leolix.org>"); |
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43 | |
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44 | GST_BOILERPLATE_WITH_INTERFACE (GstRoarMixerElement, gst_roar_mixer_element, |
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45 | GstElement, GST_TYPE_ELEMENT, GstMixer, GST_TYPE_MIXER, |
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46 | gst_roar_mixer_element); |
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47 | |
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48 | GST_IMPLEMENT_ROAR_MIXER_METHODS (GstRoarMixerElement, gst_roar_mixer_element); |
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49 | |
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50 | static GstStateChangeReturn gst_roar_mixer_element_change_state (GstElement * |
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51 | element, GstStateChange transition); |
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52 | |
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53 | static void gst_roar_mixer_element_get_property (GObject * object, |
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54 | guint prop_id, GValue * value, GParamSpec * pspec); |
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55 | |
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56 | static void |
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57 | gst_roar_mixer_element_base_init (gpointer klass) |
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58 | { |
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59 | gst_element_class_set_details (GST_ELEMENT_CLASS (klass), |
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60 | &gst_roar_mixer_element_details); |
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61 | } |
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62 | |
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63 | static void |
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64 | gst_roar_mixer_element_class_init (GstRoarMixerElementClass * klass) |
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65 | { |
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66 | GstElementClass *element_class; |
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67 | GObjectClass *gobject_class; |
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68 | |
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69 | element_class = (GstElementClass *) klass; |
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70 | gobject_class = (GObjectClass *) klass; |
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71 | |
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72 | gobject_class->get_property = gst_roar_mixer_element_get_property; |
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73 | |
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74 | g_object_class_install_property (gobject_class, PROP_DEVICE_NAME, |
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75 | g_param_spec_string ("device-name", "Device name", |
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76 | "Human-readable name of the sound device", "", G_PARAM_READABLE)); |
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77 | |
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78 | element_class->change_state = |
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79 | GST_DEBUG_FUNCPTR (gst_roar_mixer_element_change_state); |
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80 | } |
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81 | |
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82 | static void |
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83 | gst_roar_mixer_element_init (GstRoarMixerElement * this, |
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84 | GstRoarMixerElementClass * g_class) |
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85 | { |
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86 | this->mixer = NULL; |
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87 | } |
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88 | |
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89 | static void |
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90 | gst_roar_mixer_element_get_property (GObject * object, guint prop_id, |
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91 | GValue * value, GParamSpec * pspec) |
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92 | { |
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93 | GstRoarMixerElement *this = GST_ROAR_MIXER_ELEMENT (object); |
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94 | |
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95 | switch (prop_id) { |
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96 | case PROP_DEVICE_NAME: |
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97 | if (this->mixer) { |
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98 | g_value_set_string (value, this->mixer->cardname); |
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99 | } else { |
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100 | g_value_set_string (value, NULL); |
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101 | } |
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102 | break; |
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103 | default: |
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104 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
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105 | break; |
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106 | } |
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107 | } |
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108 | |
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109 | static GstStateChangeReturn |
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110 | gst_roar_mixer_element_change_state (GstElement * element, |
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111 | GstStateChange transition) |
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112 | { |
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113 | GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; |
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114 | GstRoarMixerElement *this = GST_ROAR_MIXER_ELEMENT (element); |
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115 | |
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116 | switch (transition) { |
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117 | case GST_STATE_CHANGE_NULL_TO_READY: |
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118 | if (!this->mixer) { |
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119 | this->mixer = gst_roarmixer_new ("/dev/mixer", GST_ROAR_MIXER_ALL); |
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120 | } |
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121 | break; |
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122 | break; |
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123 | default: |
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124 | break; |
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125 | } |
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126 | |
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127 | ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); |
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128 | if (ret == GST_STATE_CHANGE_FAILURE) |
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129 | return ret; |
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130 | |
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131 | switch (transition) { |
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132 | case GST_STATE_CHANGE_READY_TO_NULL: |
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133 | if (this->mixer) { |
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134 | gst_roarmixer_free (this->mixer); |
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135 | this->mixer = NULL; |
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136 | } |
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137 | break; |
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138 | default: |
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139 | break; |
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140 | } |
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141 | |
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142 | return ret; |
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143 | } |
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144 | |
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145 | |
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146 | gboolean gst_roarmixer_factory_init (GstPlugin * plugin) { |
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147 | if (!gst_element_register(plugin, "roarmixer", GST_RANK_MARGINAL, |
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148 | GST_TYPE_ROAR_MIXER_ELEMENT)) |
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149 | return FALSE; |
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150 | |
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151 | return TRUE; |
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152 | } |
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153 | |
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154 | GstRoarMixer* gst_roarmixer_new (const gchar *device, |
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155 | GstRoarMixerDirection dir) { |
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156 | GstRoarMixer *ret = NULL; |
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157 | |
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158 | g_return_val_if_fail(device != NULL, NULL); |
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159 | |
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160 | ret = g_new0(GstRoarMixer, 1); |
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161 | |
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162 | ret->device = g_strdup(device); |
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163 | ret->dir = dir; |
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164 | ret->cardname = g_strdup("RoarAudio Default Device"); |
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165 | |
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166 | /* |
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167 | if (!gst_ossmixer_open (ret)) |
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168 | goto error; |
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169 | */ |
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170 | |
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171 | if ( roar_simple_connect(&(ret->con), NULL, "gstroarmixer") == -1 ) |
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172 | goto error; |
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173 | |
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174 | return ret; |
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175 | |
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176 | error: |
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177 | if (ret) |
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178 | gst_roarmixer_free (ret); |
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179 | |
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180 | return NULL; |
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181 | } |
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182 | |
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183 | void gst_roarmixer_free (GstRoarMixer *mixer) { |
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184 | g_return_if_fail(mixer != NULL); |
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185 | |
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186 | if (mixer->device) { |
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187 | g_free(mixer->device); |
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188 | mixer->device = NULL; |
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189 | } |
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190 | |
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191 | if (mixer->cardname) { |
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192 | g_free(mixer->cardname); |
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193 | mixer->cardname = NULL; |
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194 | } |
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195 | |
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196 | if (mixer->tracklist) { |
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197 | g_list_foreach(mixer->tracklist, (GFunc) g_object_unref, NULL); |
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198 | g_list_free(mixer->tracklist); |
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199 | mixer->tracklist = NULL; |
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200 | } |
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201 | |
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202 | roar_disconnect(&(mixer->con)); |
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203 | |
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204 | g_free (mixer); |
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205 | } |
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206 | |
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207 | /* unused with G_DISABLE_* */ |
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208 | static G_GNUC_UNUSED gboolean gst_roarmixer_contains_track (GstRoarMixer * mixer, |
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209 | GstRoarMixerTrack * roartrack) { |
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210 | const GList *item; |
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211 | |
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212 | for (item = mixer->tracklist; item != NULL; item = item->next) |
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213 | if (item->data == roartrack) |
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214 | return TRUE; |
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215 | |
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216 | return FALSE; |
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217 | } |
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218 | |
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219 | const GList* gst_roarmixer_list_tracks (GstRoarMixer * mixer) { |
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220 | return (const GList *) mixer->tracklist; |
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221 | } |
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222 | |
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223 | void gst_roarmixer_set_volume (GstRoarMixer * mixer, |
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224 | GstMixerTrack * track, |
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225 | gint * volumes) { |
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226 | } |
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227 | void gst_roarmixer_get_volume (GstRoarMixer * mixer, |
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228 | GstMixerTrack * track, |
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229 | gint * volumes) { |
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230 | } |
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231 | void gst_roarmixer_set_record (GstRoarMixer * mixer, |
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232 | GstMixerTrack * track, |
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233 | gboolean record) { |
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234 | } |
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235 | void gst_roarmixer_set_mute (GstRoarMixer * mixer, |
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236 | GstMixerTrack * track, |
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237 | gboolean mute) { |
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238 | } |
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239 | |
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240 | //ll |
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